首页|光伏电站对沉陷塘冬季水质和浮游植物群落结构的影响

光伏电站对沉陷塘冬季水质和浮游植物群落结构的影响

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[目的]探究水面光伏电站对沉陷塘冬季水质及浮游植物群落结构特征影响,为水面光伏应用于采煤沉陷水域提供数据参考.[方法]对立柱光伏沉陷塘、漂浮光伏沉陷塘和无光伏沉陷塘(对照)的水体和浮游植物群落进行采样调查,并通过Pearson相关性分析和逐步回归分析进行影响因素分析.[结果]立柱光伏沉陷塘浮游植物共鉴定出41种,漂浮光伏沉陷塘浮游植物共40种,无光伏沉陷塘浮游植物共47种,物种均以硅—绿藻型为主.相较对照沉陷塘,水面光伏电站减弱了沉陷塘光照强度,光伏沉陷塘的电导率(EC)、总溶解固体(TDS)、氧化还原电位(ORP)和氨氮(NH3-N)有所降低,且立柱光伏电站上述指标小于漂浮光伏电站;漂浮光伏电站还能降低水体化学需氧量(CODCr)、总氮(TN)和总磷(TP)的含量.漂浮光伏、立柱光伏沉陷塘的浮游植物种类数、密度和生物量相比与对照沉陷塘均略有降低.而Shannon-Wiener 多样性指数、Pielou均匀度指数和Margalef丰富度指数均表现为:无光伏沉陷塘＞漂浮光伏沉陷塘＞立柱光伏沉陷塘.[结论]水面光伏有助于降低冬季水体盐度,保持水体温度与溶解氧含量,并且上述指标立柱光伏电站改善效果比漂浮光伏电站好,在一定程度上漂浮光伏电站还可以改善富营养水体.水面光伏能对浮游植物群落结构产生一定影响,且漂浮光伏对沉陷水体浮游植物影响较立柱光伏小.Pearson和逐步回归分析发现立柱光伏沉陷塘浮游植物群落多样性主要受水温(WT)、总氮(TN)影响,漂浮光伏沉陷塘主要受水温(WT)影响.综合而言,漂浮光伏电站更有利于沉陷塘水质,对浮游植物群落结构影响最小.
Influence of Photovoltaic Power Stations on Water Quality and Phytoplankton Community Structure in Subsidence Ponds in Winter
[Objective]The effects of surface photovoltaic(PV)power station on the structural characteristics of water quality and phytoplankton communities in subsidence ponds in the winter were investigated in order to provide data references for the application of surface PV in coal mining subsidence waters.[Methods]Water bodies and phytoplankton communities of column PV ponds,floating PV ponds,and non-PV ponds(comparison)were sampled and investigated,and the influencing factors were analysed using Pearson correlation and stepwise regression analyses.[Results]A total of 41 species of phytoplankton were identified in the column PV sinkhole pond,40 species of phytoplankton in the floating PV sinkhole pond,and 47 species of phytoplankton in the pond without PV sinkholes;the diatom-green-algal type dominated the species.Compared with the control sinkhole ponds,the surface PV power plant effectively reduced the light intensity and lowered the levels of electrical conductivity,total dissolved solids,oxidation reduction potential,and ammonia nitrogen in the sinkhole ponds.Similarly,the floating PV power plants reduced the chemical oxygen demand,total nitrogen(TN),and total phosphorus contents in the water body.Additionally,the column PV power plant had lower levels of the above-mentioned indicators than the floating PV power plant.The number of phytoplankton species,density,and biomass in the floating PV and column PV sinking ponds were slightly lower than those in the control sinking ponds.The values for the Shannon-Wiener diversity index,Pielou homogeneity index,and Margalef richness index were ordered as follows:no PV pond＞floating PV pond＞column PV pond.[Conclusion]Surface PVs can help reduce the salinity of winter water bodies and maintain both the temperature of the water bodies and the content of dissolved oxygen.The above indices used for the column PV power station to improve its effect were better than those for the floating PV power station,and to a certain extent,the floating PV power station could improve eutrophic water bodies.Surface PVs can affect the structure of phytoplankton communities,and the effect of floating PVs on the phytoplankton of sunken water bodies is smaller than that of column PVs.Pearson and stepwise regression analyses revealed that the phytoplankton community diversity of column PV sunken ponds is mainly affected by water temperature(WT)and TN,while that of floating PV subsidence ponds are mainly affected by the WT.In summary,floating PV power station are more favourable for improving the water quality of subsidence ponds and have the least impact on the phytoplankton community structure.

surface photovoltaicmining subsidence pondphytoplankton community structureenvironment factors

王兴明、滕杰、范廷玉、储昭霞、董众兵、董鹏

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安徽省高潜水位矿区水土资源综合利用与生态保护工程实验室安徽理工大学地球与环境学院,安徽淮南 232001

资源与环境生物技术安徽普通高校重点实验室淮南师范学院生物工程学院,安徽淮南 232038

昆明理工大学冶金与能源工程学院,云南昆明 650031

水面光伏 采煤沉陷塘 浮游植物群落结构 环境因子

国家自然科学基金项目国家重点研发计划项目国家重点研发计划项目安徽高校协同创新项目安徽省重点研究与开发计划项目安徽省高校优秀人才重点支持计划项目安徽省高潜水位矿区水土资源综合利用与生态保护工程实验室开放课题2023年度省级新时代育人质量工程项目(研究生教育)2022年度省级质量工程项目安徽开源园林绿化工程有限公司研发专项

518780042020YFC19086012019YFC1803501GXXT-2020-075202104年06020027gxyqZD20211292022-WSREPMA-042023zyxwjxalk0692022xxkc026

2024

10.13961/j.cnki.stbctb.2024.04.019

水土保持通报
中国科学院水利部水土保持研究所 水利部水土保持监测中心

水土保持通报

CSTPCD北大核心
影响因子：0.658
ISSN：1000-288X
年,卷(期)：2024.44(4)
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